Ndim_ :=    4   :
x1_   :=   r   :
x2_   :=   theta   :
x3_   :=   phi   :
x4_   :=   t   :
eta11_   :=   -1   :
eta22_   :=   -1   :
eta33_   :=   -1   :
eta44_   :=   1   :
bd11_   :=   (r)^(1/2)/(r-2*m)^(1/2)   :
bd22_   :=   r   :
bd33_   :=   r*sin(theta)   :
bd44_   :=   (r-2*m)^(1/2)/(r)^(1/2)   :
Info_ := `    Schwarzschild basis   `: